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1. WO2011150417 - USE OF CACTUS MUCILAGE AS A DISPERSANT AND ABSORBANT FOR OIL IN OIL-WATER MIXTURES

Publication Number WO/2011/150417
Publication Date 01.12.2011
International Application No. PCT/US2011/038549
International Filing Date 31.05.2011
IPC
C02F 1/40 2006.1
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
40Devices for separating or removing fatty or oily substances or similar floating material
C02F 1/28 2006.1
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
28by sorption
C02F 1/38 2006.1
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
38by centrifugal separation
B01D 36/04 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
36Filter circuits or combinations of filters with other separating devices
04Combinations of filters with settling tanks
CPC
B01J 20/24
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
20Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
22comprising organic material
24Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
B01J 2220/4825
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
2220Aspects relating to sorbent materials
40Aspects relating to the composition of sorbent or filter aid materials
48Sorbents characterised by the starting material used for their preparation
4812the starting material being of organic character
4825Polysaccharides or cellulose materials, e.g. starch, chitin, sawdust, wood, straw, cotton
B01J 2220/485
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
2220Aspects relating to sorbent materials
40Aspects relating to the composition of sorbent or filter aid materials
48Sorbents characterised by the starting material used for their preparation
4812the starting material being of organic character
485Plants or land vegetals, e.g. cereals, wheat, corn, rice, sphagnum, peat moss
C02F 1/286
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
28by sorption
286using natural organic sorbents or derivatives thereof
C02F 1/682
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
68by addition of specified substances, e.g. trace elements, for ameliorating potable water
682by addition of chemical compounds for dispersing an oily layer on water
C02F 2101/32
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
2101Nature of the contaminant
30Organic compounds
32Hydrocarbons, e.g. oil
Applicants
  • UNIVERSITY OF SOUTH FLORIDA [US]/[US] (AllExceptUS)
  • ALCANTAR, Norma A. [US]/[US] (UsOnly)
  • FOX, Dawn I. [GY]/[US] (UsOnly)
  • THOMAS, Sylvia [US]/[US] (UsOnly)
Inventors
  • ALCANTAR, Norma A.
  • FOX, Dawn I.
  • THOMAS, Sylvia
Agents
  • VARKONYI, Robert
Priority Data
61/349,38228.05.2010US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) USE OF CACTUS MUCILAGE AS A DISPERSANT AND ABSORBANT FOR OIL IN OIL-WATER MIXTURES
(FR) UTILISATION DE MUCILAGE DE CACTUS COMME DISPERSANT ET ABSORBANT DE L'HUILE DANS DES MÉLANGES HUILE-EAU
Abstract
(EN) Despite advances in off-shore oil exploration and drilling technology, accidental oil spills do occur. Depending on their magnitude and location, irreparable damage may be inflicted on marine and coastal ecosystems. Emulsification of a water/surfactant /oil system results in the production of oil droplets and this depends on the formulation and composition variables, mixing characteristics and system preparation. Thus, research is ongoing on improving methods of cleaning up oil spills. Cactus mucilage was used to disperse and absorb oil from a simulated oil slick in different salt concentrations. Results show correlations between emulsion properties and interfacial characteristics of mucilage as function of aqueous phase salinity. Mucilage powder added to the oil floating on the water dispersed the oil film and absorbed the oil while remaining afloat, facilitates removal of the oil-mucilage aggregate. This invention is a competitive treatment for oil spill remediation with the added advantage of being more environmentally friendly.
(FR) Malgré les avancées acquises dans la technologie d'exploration et de forage du pétrole off-shore, des déversements accidentels d'hydrocarbures ne manquent pas de survenir. Selon leur ampleur et leur emplacement, des dommages irréparables peuvent être infligés aux écosystèmes marin et côtier. L'émulsification d'un système eau/tensioactif/huile produit des gouttelettes, ce résultat dépendant des variables de la formulation et de la composition, des caractéristiques du mélange et de la préparation du système. Aussi la recherche suit-elle son cours en vue d'améliorer les procédés de nettoyage des déversements d'hydrocarbures. Un mucilage de cactus a été utilisé pour disperser et absorber l'huile d'une nappe d'hydrocarbures simulée, à différentes concentrations de sel. Les résultats établissent des corrélations entre des propriétés d'émulsion et des caractéristiques interfacielles de mucilage, en fonction de la salinité de la phase aqueuse. De la poudre de mucilage ajoutée à de l'huile flottant sur l'eau a dispersé le film d'huile et absorbé l'huile tout en restant en surface, ce qui facilite l'élimination de l'agrégat huile-mucilage. Cette invention offre un traitement concurrentiel pour le remédiement des déversements d'hydrocarbures, ainsi que l'avantage supplémentaire d'être plus respectueuse de l'environnement.
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